A semiclassical description of diffusive spin transport in spin valves, which takes into account the transverse components of spin accumulation, is used to calculate the second harmonic voltage response to a low-frequency current. The description is applied to single as well as dual spin valves, with the magnetic moment of the sensing layer slightly tilted out of the equilibrium position by an in-plane external magnetic field. In the case of double spin valves, only the antiparallel configuration is considered since the spin torque in this configuration is enhanced, while in the parallel configuration it is significantly reduced. In both cases considered, the second harmonic voltage response and the relevant magnetoresistance are shown to be significantly dependent on the transverse spin penetration length.
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21 May 2013
Research Article|
May 20 2013
Transverse spin penetration length in metallic spin valves
Pavel Baláž;
Pavel Baláž
1
A. Mickiewicz University, Faculty of Physics
, Umultowska 85, 61-614 Poznań, Poland
2
Institute of Molecular Physics, Polish Academy of Sciences
, Smoluchodwskiego 17, 60-179 Poznań, Poland
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Józef Barnaś;
Józef Barnaś
1
A. Mickiewicz University, Faculty of Physics
, Umultowska 85, 61-614 Poznań, Poland
2
Institute of Molecular Physics, Polish Academy of Sciences
, Smoluchodwskiego 17, 60-179 Poznań, Poland
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Jean-Philippe Ansermet
Jean-Philippe Ansermet
3
Ecole Polytechnique Fédérale de Lausanne
, IPMC-Station 3, CH-1015 Lausanne-EPFL, Schwitzerland
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Pavel Baláž
1,2
Józef Barnaś
1,2
Jean-Philippe Ansermet
3
1
A. Mickiewicz University, Faculty of Physics
, Umultowska 85, 61-614 Poznań, Poland
2
Institute of Molecular Physics, Polish Academy of Sciences
, Smoluchodwskiego 17, 60-179 Poznań, Poland
3
Ecole Polytechnique Fédérale de Lausanne
, IPMC-Station 3, CH-1015 Lausanne-EPFL, Schwitzerland
J. Appl. Phys. 113, 193905 (2013)
Article history
Received:
March 23 2013
Accepted:
April 26 2013
Citation
Pavel Baláž, Józef Barnaś, Jean-Philippe Ansermet; Transverse spin penetration length in metallic spin valves. J. Appl. Phys. 21 May 2013; 113 (19): 193905. https://doi.org/10.1063/1.4804662
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